Elevators Lifts Installation Method Statement

The purpose of this method statement is to describe the detailed procedure to be follow for the Commissioning of Elevator (Lift) at the project site. This method statement is prepared also to ensure that concerned persons are familiarized with the sequence of activities, utilization of resources and relevant documents in compliance with HSE and QA/QC procedures & requirements

The following precautionary steps must be taken in the specified order unless there are essential reasons for doing otherwise:

Disconnect the power supply completely.

Secure it against re-connection.

Verify that the installation is de-energized.

Check requirements for earthing in special circumstances. (This operation may only be carried out by qualified personnel in co-operation with the person responsible for the building electrification who must ensure that the technique can be safely employed in this situation.)

Provide protection against adjacent live parts.

Prerequisites for initial Lifts Commissioning:

Ensure the working place is cleared from unnecessary object and lockable.

Ensure the alignment of the machinery and connection of all machinery wires.

Ensure the fixing of the SEP panel, Drive panel and connection of wires from machinery.

Ensure the connection power supply and earthing in the main switch and in the Maintenance access panel.

Check the connection and tightening of all the wires in the terminals.

Check the insulation resistance value for the motor wires and brake wires. Note down the values in the Test Report.

Check the ohmic value of thermistors and any short circuit between controller wires to earth.

Ensure the brake is adjusted.

Ensure the Fuse ratings are correct in the mains isolator and in the control panel.

Remove all the Transportation protective covers if any.

Tripping speed reducing weights are removed from the Overspeed Governor.

The positioning magnets are installed accurately as per the Shaft wiring Diagram.

Check that Load weighing cable is connected as per wiring diagram.

Car and counterweight is balanced.

Initial Commissioning of Lifts:

Ensure the earth of the main supply is connected to the main earth of the Building.

After successful setup user interface displays – — –, lines for few seconds and Floor number on Display.

Drive the car in nominal speed and verify the operation is smooth and stops for the desired floor.

Check the levelling accuracy and if necessary adjust the switches / Magnets

Do the set up again if the switches / magnets are adjusted.

Run the elevator in normal mode for 30 minutes with various load conditions and see for any variations.

Check for levelling accuracy and note down the readings.

Check the car and landing indications and the call registration.

Check the Door operations are smooth and adjust if necessary.

Check the Door safeties are working and functioning of Door open button.

Check the car lighting and operation of cabin fan.

Check the overload function and the buzzer and light indication comes ON.

Check for the Group Operation.

Take the current readings and note down the readings.

Do the safety test as per test report.

Check for Fire operation.

Check for the Emergency Battery Drive operation (EBD) during power failure.

Check the operation of EBD (M) for balanced Load operation during Power failure.

Prepare the test report as per the format enclosed

Interfacing of the Lifts

Fire Alarm: All the building fire cables are connected with lift controller and in the event of Fire elevator will come automatically in the main landing and opening the door for passengers Evacuation. If the Elevator in fire mode , will work only with key and this operation can done by a trained fire fighter.

Building Management system: (BMS) is a computer-based control system installed in buildings that controls and monitors the building’s mechanical and electrical equipment such as ventilation, lighting, power systems, fire systems, and security systems.

Now a day’s lift operation also monitored in the control room. In our controller we can connect, three different status monitored in the control room.

Lift main power failure status

Healthy status – Normal

Alarm status.

Seismic sensors

Normally the seismic sensor switch are installed in the Elevator pit side.This is an earth quake safety equipment, this protect the passengers while traveling under earth quake. Seismic Switch units can disable or deactivate any elevators which may become life endangering or self destructive during an earthquake. Our proven units are designed to reliably respond to only earthquake motions and to reject interference or false triggering from man made and non-earthquake motions Elevator cars are moved to nearest floors when an earthquake is detected by seismic sensors.